Clamshell-dumping device



A. STEWART.

CLAMSHELL DUMPING DEVICE.

APPLICATION FILED DEC.6.1920- 1,396,347. 7 Patented Nov. 8, 1921.

A1 EXandE 1" r SEewart UNITED STATES W ALEXANDER STEWART, OF WAUPACA, WISCONSIN.

CLAMSHELL-DUMPING DEVICE.

Specification of Letters Patent.

' Patented Nov. 8, 1921.

Apnlication filed December 6, 1920. Serial No. 428,768.

1 '0 all avwmit may concern Be it known that I, ALEXAXDER STEWART, a citizen of the United States, and resident of aupaca, in the county of lVaupaca and State of \Visconsin, have invented certain new and useful Improvements in Clamshell- Dumping Devices; and I do hereby declare that the following is a full, clear, and exactdescription thereof.

This invention relates to improvements in dumping devices of the clam shell type in which two complementarysections are pivoted so as to tilt toward each other and discharge the load between them.

One of the objects of the invention is to provide a device of this character in which the load will be dumped by gravity, and in which the dumping section will be automatically locked in either normal or clumping position.

Another object of the invention is to provide a locking device so as to lock the sections in any position desired, so that they may discharge the load all at once, or discharge it gradually as the vehicle is drawn forward.

In describing my invention, reference will be had to the accompanying drawing, in which:

Figure 1 is a side elevation of my device with parts broken away, and

Fig. 2 is a cross section on the line 2-2 of Fig. 1.

similar reference characters will be applied to similar parts throughout each of the views.

The numeral 10 denotes the rectangular frame of a vehicle to which my invention is applied. On the sides of this frame are provided the journal bearings 11. in which are journaled the trunnions-12 which carry the complementary dumping sections 13 and 14. On the sides of these sections are attached the brackets 15 and 16 respectively. to which are pivoted the links 17 and 18. The other ends of said links are pivotally connected by the pivot pin 19. the outer end of which extends through the slot which is formed by the sides of a vertical standard 20 mounted on the side of the frame 10. The sides of this standard diverge at their lower ends in order to form a more stable support.

A keeper 21 is secured near the lower end of the standard, within which is pivoted the latch 22. The lower end of the latch loosely engages the bolt 23, which is slidably sup ported in the keepers 2 1. The bolt is pro.- vided with a shoulder 25, which is yieldngly held by the spring 26 to hold the latch n the position shown in Fig. 1, in which its hook 26. engages the pin 19. The outer end of the hook is provided with the inclined portion 27, so that as the sections are being restored from dumping to normal position, this inclined portion will ride up on the pin 19 causing the hook to automatically engage the same.

The upper end of the standard is provided with a latch 28, pivotally mounted within the clip 29 and yieldingly held in the posi tion shown in Fig. 1 by the spring held bolt 30. The keeper 29 and the latch 28 are mounted on the pin 31, which is removablv held in any one of a plurality of holes Thelatch 28 is provided with the inclined portion 38, on which the pin 19 will ride up as the sections are dumped, and thus automatically engage the latch.

The lower end of the latch 28, is provided with a handle 34 for releasing the pin 19. The plurality of holes 32, as will readily be seen, are for the purpose of securing the latch 28in any desired position on the standard 20 in order to limit the dumping position of the sections.

lVhen it is desired to dump the load, the latch 22 is moved by any suitable means against the pressure of the spring 26. so as to release the pin 19. The links then are raised to the position shown in broken lines in Fig. 1, in which position they are held by the latch 28.

It is to be understood, of course, that my invention is not limited to the precise structure herein shown and described, but that it includes all modifications which fall within the scope of the appended claims.

I claim as my invention:

1. In a device of the character described, a dumping container composed of two com plementary sections operable by gravity to dump their load, releasable locking means normally holding them against dumping, and adjustable means for limiting their dumping movement and for locking them against return movement.

2. In a device of the character described, a dumping container composed of two complementary sections operable by gravity to dump their load, a spring held latch, means connected with said dumping sections and automatically engageable by said latch to hold said sections in dumping position, and releasable means automatically engaging said first mentioned means to lock sald sections when restored to normal position.

3. In a device of the character described, a dumping container composed of two complementary sections operable by gravity to dump their load, a vertically adjustable spring held latch, means connected with said diunping sections and automatically engage able by said latch to hold said sections adjustably in dumping position, and releasable means automatically engaging said firstmentioned means to lock said sections when restored to normal position.

4. In a device of the character described, a frame, two complementary dumping sections tiltable on said frame, a standard forminga guideway mounted on the frame, means connected with said sections and slidable in said guideway, a spring held latch mounted on said standard, means connected with said dumping sections and automatically engageable by said latch to hold said sections in dumping position, and releasable means automatically engaging said firstmentioned means to lock said sections when restored to normal position.

5. In a device of the character described, a frame, two complementary dumping sections tiltable on said frame, a a standard forming a guideway mounted on the frame, means connected with said sections-and slidable in said guideway, a vertically adjustable spring held latch mounted on said standard, means connected with said dumping sections and automatically engageable by said latch to hold said sections adjustably in diunping position, and releasable means automatically engaging said first mentioned means to lock said sections when restored to normal position. 6. In a device of the character described, a frame, two complementary dumping sections tiltable on said frame, means connected with said sections and slidable in said guideway, a spring held latch mounted on said standard, means connected with said dumping sections and automatically engageable by said latch to hold said sections in dumping posit-ion, a keeper mounted on said standard, releasable means mounted on said keeper and automatically engaging said first mentioned means to lock said sections when restored to normal position.

7. In a device of the character described, a frame, two complementary dumping sections tiltable on said frame, a standard forming a guideway mounted on said frame, means connected with said sections and slidable in said guideway, a vertically adjustable spring held latchmou-nted on said sections, means connected with said dumping sections and automatically engageable by said latch to, hold said sections adjustably in dumping position, a keeper mounted on said standard, a spring held latch pivoted in said keeper, and automatically engaging the means connected with the dumping sections to lock said sections as they are restored to normal position.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

ALEXANDER STEWART. 

